Ink-roller and process of making the same.



No- 830,432. PATENTED SEPT. 4, 1906. J. H. HENNESSEY.

INK ROLLER AND PROCESS OF MAKING THE SAME. APPLICATION FILED JUNE 22,1905.

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JEROME H. HENNESSEY, OF WASHINGTON, DISTRICT OF COLUMBIA.

INK-ROLLER AND PROCESS OF MAKING THE SAME.

Specification of Letters Patent.

Patented Sept. it, 1906.

' nication as June 22,1905. Serial No; 266.496.

T0 (LZZ whom it may concern.-

Be it known that I, JEROME H. Hnmvns- SEY, a citizen of the United States, residing at W ashin ton, in the District of Columbia, have invented certain new and useful Improvements in Inking-Rollers and Processes of Making the Same, of which the following is a specification. l 4

The inking-rollers commonly employed in printing-presses consist of a cylindrical metal core or body having journals, upon which is a concentric cast layer of a composition of glue and gylcerin. This composition, while elastic and hygroscopic, has little tensile strength and is lacking in durability. To increase the life of these rollers, various expedients have been tried or suggested, such as drawing a tube of thin leather, skin, or rubber tightly over the roller, winding the roller with a helical strip of cloth, wrapping a piece of leather or cloth over the roller and sewing to.- gether the adjacent edges, or casting the roller composition into a cloth. bag.

. in proximity to the wall of the mold, casting the composition into the mold, and maintaining the fabric tube under tension until the casting solidifies and holds the fabric in position. i

T he process may be carried out by various forms of apparatus. One which has been found effective for the purpose is shown in the accompanying drawings, in which- Figure 1 is an axial section through a mold and a fabric tube supported therein, showing the core in elevation. Fig. 2 is a similar view of the mold with the composition cast therein; and Fig. 3 is a side elevation of one end of the improved roller, tne upper portion of the composition being shown in section and the fabric cover being partially detached from the lower portion.

The apparatus illustrated comprises a mold having a tubular body 1 and a base 2, on which the body is removably seated. Concentrically supported within the body is the core 3, having an upper ournal 4, which is centered'by a spider 5, and the lower journal 6, which is supported in a con tral'seat 7 in the base. In the base 2 and around the journal is a chamber 8 for the introduction of the molten composition which is supplied under pressure through the valved pipe 9. Supported within the mold-body is a fabric tube 10for example, one of cotton cloth. The major portion of the fabric tube is supported Within the mold and in proximity to its inner wall by the Spider 5, between which and the mold-bodythe cloth is slightly pinched, so as to carry the weight of the cloth, but permit it to move when tension is applied to its upper end. The portion '11 of the fabric tube above the spider 5 is loosely supported in a collapsed condition by a wooden disk 12, to which the upper end of the fabric is secured and which fits loosely within the mold-body. The disk rests upon and has a seat 15, which receives the upper core-journal 4. The lower end 13 of the fabric tube is tightly pinched between the conical upper end 14 of the mold-base and the lower end of the mold-body. The wooden disk 12*is pierced with one or more small air-escape passages 16 and a cord 17 extends upward from its center.

To cast the roller with the parts in the position shown in Fig. 1, the valve in pipe 9 is open, permitting the molten composit on 18 to flow into the mold. As the composition fills themold 'and rises into contact with the wooden disk 12 this I disk floats upward until its further movement is prevented by the tension of the fabric tube, as shown in Fig. 2. The full pressure cf the composition is then exerted upon this disk, thereby tightly stretching the fabric tube throughout its length. The pressure exerted laterally against the fabric tube forces the composition into close contact with the cloth and a small amount generally passes through the interstices of the cloth, thereby superficially embedding it in the surface of the casting. As the mold fills the operator holds the cord 17, and when the disk 12 ceases to rise'he closes the inlet-valve and draws the cord 17 tight to maintain the tension of the fabric tube until the composition has solidified. The moldbody is then removed, the roller and core ejected therefrom, and the portions of the composition 18 beyond the ends of the corebodytrimmed off.

One end of the completed roller is shown in Fig. 3, the fabric 10 and the composition 18 upon the upper part of the core 3 being shown in section and the fabric cover being shown position during the castin wooden float and its attached cord serve as a convenient means for stretching the fabric tube by transmitting thereto the pressure of the molten composition and enabling the operator to maintainthe fabric under tension until the casting-has solidified, it will be understood that the same result may be effected by other specific means. For example, the holes in thedisk 15 may be of such size that the molten composition exerts no pressure thereon, the fabric tube being initially stretched andmaintained in such condition by the operator pulling on the cord 17 or by a tension-spring attached thereto or by other means secured to the upper end of the fabric tube and holding it under tension. The molten composition may also be introduced through the upper instead of thelower end of the mold, the upper end of the fabric tube having an opening of sufficient size to readily admit it.

I claim- 1. The process of making an inking-roller, which consists in arranging in a roller-mold and in proximity to its inner wall, a tube of thin flexible material having a circumference substantially equal to thatof the mold-cavity, longitudinally stretching said tube, and casting the roller composition into said tube and allowing it to solidify while the tube is under tension, as set forth.

2. The process of making an inking-roller, which consists in arranging in a roller-mold and in proximity to its inner wall, a fabric tube having a circumference substantially equal to that of the mold-cavity, longitudinally stretching said tube, and casting the roller composition into said tube and allowing it to solidify while the tube is under tension, as set forth.

3. The process of making an inking-roller, which consists in arranging. in a roller-mold and in proximity to its inner wall; a fabric tube having a circumference substantially equal to that of the mold-cavity, introducing the roller composition into said mold under pressure, employing the pressure ofsaid composition tov longitudinally stretch said tube as the mold fills, and allowing the composition to solidify while the tube is under tension, as set forth.

4. The process of making an inking-roller, which consists in arranging in a roller-mold and in proximity to its inner wall, a fabric tube having a circumference substantially equal to that of the mold-cavity, securing the lower end of said tube to the mold, applying tension to the upper end of said tube, and casting the roller composition into said tube and allowing it to solidify while the tube is under tension, as set forth.

5. The process of making an inking-roller, which consists in arranging in a roller-mold and in proximity to its inner wall, a fabric tube having a circumference substantially equal to that of the mold-cavity, clamping the lower end of said tube between the base and body of the mold, applying tension to the upper end of said tube, and casting the roller composition into said tube and allowing it to solidify while the tube is under tension, as set forth.

6. An inking-roller, comprising an elastic body of acast composition and a tubular fabric cover, said cover being longitudinally stretched and held in position by the solidified composition, as set forth.

7. An inking-roller, comprising an elastic body of a cast composition and a tubular fabric cover superficially embedded in said body, said cover being lon itudinally stretched and held in position by the solidified composition, as set forth.

In testimony whereof I aflix my signature in presence oftwowitnesses.

JEROME H. HENNESSEY. Witnesses:

EUGENE A. BYRNE'S, CLINTON P. TOWNSEND. 

